Harfords have a long history performing the art of white metal re-lining.
With an extensive knowledge of the casting of white metals, Harfords have expertly trained, experienced and competent staff who provide a white metal service to our clients. An understating of the precision machining and fit up of bearings, correct bearing shell or housing crush and how a bearing operates in service is absolutely vital to a successful job.
White metal is not just a sacrificial surface to minimise damage of the adjacent surface during failure mode, It has other physical properties such as embed ability and conformability along with soft and hard phase in the micro-structure to impart an oil retaining film on the surface due to the existence of micro gullies. Antimony and Copper hard phases in the micro structure are designed to achieve a maximum wear life.
To achieve the proper formation and even dispersion of these hard phases throughout the finished casting, the cooling rate from the molten state to solidification needs specific control. Harfords cooling rate procedures ensure a premium quality casting and therefore maximum life of the bearing.
With any task like this, a level of assurance is vital, Harford's provide an ultrasonic bond test certificate to A.S. 2824 1985/ Level E1, L1 and a conformity of materials certificate on every remetalling job.
If your industry is continually dogged by this type of service application, you can trust Harfdords extensive knowledge and experience to get the job done, providing absolute peace of mind and the assurance of minimising downtime.
Harfords are proud to offer the best advice and sevice for your next job.